Chroma ATE / April, 2021
The Secret of Thermal and Spike-Free Laser Diode Testing for Fiber Optics

The Customer
A world-famous manufacturer of fiber optic transceivers, delivering the highest quality of transceivers
The Application
Laser diodes for fiber-optic communication
The Challenge
Laser diodes are extremely sensitive to temperature and spikes: the temperature must stay stable for consistent burn-in, and the driving current should be free of spikes to prevent any latent damage.

Results
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Stable thermal control with built-in heater and fan
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High resolution and accuracy SMU for both current and voltage driving
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Spike-free SMU to guarantee no latent damage